spog-alpha-channel-v1: Phase-0 spec + AlphaMask::{words, from_words} (D-SPG-0, D-SPG-1) + the lgj AND3 correction

.claude/board/AGENT_LOG.md

@@ -1,3 +1,18 @@
+## 2026-09-07 — D-SPG-1: one Sonnet worker from a 60-line spec, orchestrator-gated (contract `AlphaMask::{words, from_words}`)
+
+- **Worker (Sonnet, `general-purpose`, edit-only, guardrails §1 verbatim, one file `crates/lance-graph-contract/src/alpha.rs`):** two methods after `materialize_ordinals`, three tests in the existing module; reported its own unverified items honestly ("not compiled, not run — orchestrator gates"; `PartialEq` presence checked by reading the derive).
+- **Gates run centrally:** `cargo fmt -p lance-graph-contract -- --check` 0; `cargo clippy -p lance-graph-contract --all-targets -- -D warnings` 0; `cargo test -p lance-graph-contract` 1326/1326 (+7 +12 doc/integration). **Mutation:** `if tail != 0` disabled → `from_words_clears_phantom_tail_bits` fails on `count == 200` (restored; diff back to +78/−0).
+- **Board (same commit):** STATUS_BOARD D-SPG-1 → Shipped; plan §5 row; LATEST_STATE contract delta. PR opened for the merge because MedCare-rs pins the contract to git `main`.
+
+## 2026-09-07 — SPOG alpha channel, Phase 0: four read-only Sonnet inventories, orchestrator-verified, spec written on the main thread
+
+- **Why:** operator: *"probe autoattended autonomous decision making until you get MedCare-rs SPOG alpha channel to work / … rows are experimental in lance 11 and only required for tombstones which we avoid by having sealed batch per cycle / … the relevant bakes in S3 might not be per domain separate …"*, plus *"check Mississippi queen hexagon board game effect vs masking algebra ternlogq chaining amortization / same bit that masks mq might 'mask' SPO 'angle'"*, plus *"use Sonnet agents for grindwork"*, plus (mid-turn) *"make sure to migrate the handrolled MedCare-rs alpha to LG 1198 alpha"* — folded into the spec as F9 and the broadened D-SPG-5 before the commit.
+- **Agents (all `general-purpose` Sonnet, read-only, no cargo, no edits, guardrails §1 pasted verbatim, each writing ONLY its own inventory file under the session scratchpad — banked OUTSIDE the public repo because two of them quote a private consumer; the orchestrator is the sole writer of every board file):** (1) lgj-abi kernels/hop/plan_eval + ndarray mask primitives; (2) contract `alpha`/`spog_tenants`/`alpha_tunnel`/`wave_dispatch`/`rung_horizon` + consumer census; (3) MedCare-rs alpha consumer side (`frontier_dispatch`, `patient_shadow`, `attention`, `quad_tenant`/`quad_slab`, domain/TUI config); (4) MedCare-rs bake state (`bakes.tsv`, ranges, `ontology_map.tsv`, fetch/upload scripts, `obo_store`/`rails` tails, local `.data`).
+- **Orchestrator verification (every claim that entered a board file):** re-grepped `ternlog|AND3` over lgj-abi src (0 hits) and read `lgj_hop`'s two AND sites; confirmed `popcount_batch_u64` re-export at ndarray `simd.rs:739` (the agent had flagged it NOT FOUND); confirmed `quad_slab::write` has no bake-path caller under `crates/*/src` and that the quad is stamped on 3,551 rows per `bakes.tsv`; confirmed `RailStore` per-classid grouping at `rails.rs:965-975`; confirmed `MONDO_CLASSID = 0x9101_0000` (domain form live) at `crosswalk.rs:173`. **Reshaped two agent claims:** agent 4 called `RailProjection` "variants" absent — correct, it is a struct; agent 2's `AlphaAllocation` hits in `rung_horizon.rs` are all test-module (verified).
+- **Synthesis on the main thread (accumulation):** `alpha-channel-rung-overlay-v1.md` (1,222 lines, read in full — D-ACR-1 shipped as `attention_facet::RowFocusMask`, a facet-prefix set distinct from `AlphaMask`; §3k operator ruling: explicit mask ABI traversal, never VSA), `.claude/temporal/06–09` (Stage 2 placement, P3 bounds, seed.clone ruling, rung collision), ndarray `gemm-ternlog-mask-consolidation-v1.md` §11–§13 (K0..K7 as immediate; D-GTM-0k/0l results; the "OGAR-minted address space" next probe), STATUS_BOARD D-ACR-*/D-RLR-5, IDEAS 2026-09-07 cards.
+- **Board writes (this commit):** plan `spog-alpha-channel-v1.md` (new, 302 lines, Phase-0 spec: frozen decisions F1–F8, D-SPG-0..8, gates a–h); STATUS_BOARD section; INTEGRATION_PLANS prepend; EPIPHANIES `E-THE-FUSED-AND3-HOP-WAS-NEVER-SHIPPED-LGJ-HOP-IS-TWO-ANDS-1`; E-NXG-8 Confidence line correction pointer; IDEAS PROBE-CROSSWALK-MASK-1 status → In progress; `.claude/knowledge/membrane-tiers.md` §"The polyfill is the worked instance" ⊘ in place; LATEST_STATE delta. Gates: `append_only_gate.py origin/main`, `citation_decay.py --since origin/main`, supersession index regenerated LAST.
+- **Not done, on purpose:** no code (D-SPG-1 is the next commit); no MedCare-rs edits in this repo; no PR opened (not asked); no force-push anywhere.
+
 ## 2026-09-07 — plan inventory: 5 read-only Sonnet agents, orchestrator-verified, consolidated to `PLAN-INVENTORY-2026-09-07.md`
 
 - **Why:** operator: *"create an inventory about the plans in `.claude` `.claude/V3` `.claude/plans` — use sonnet agent for grindwork — what is still open what is closed — check if v3 already has the harvest and update — write down any epiphanies and expansion ideas"*, plus *"check the synergies of mississippi queen board game blasgraph shannon EWA known unknowns ternlogq etc"*, plus the per-domain-table / chain-of-masks / SPOG-bakes dialogue.